Earth-boring machine.



G. L. BELT Z.

EARTH BORING MACHINE.

APPLICATION FILED man. 19, 190B.

Patented Jan. 19, 1909.

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, wnNEss INVENTOR Patented Jan. 19, 1909.

CHARLES L. on

CALIFORNIA.

mam-ta meme.

Specification of Letters Patent.

Patented 19 1909.

Application filed February 19, 1908. Serial No. 416,732.

To allwhom it may concern:

Be it known that I, CHARLES L. BELTZ,

citizen of'the United States, residing at Selma,

ported upon any suitable whichdiagonal braces 6, with pin-holes 6 in thecounty of Fresno and State of California, have invented new and usefulImprovements in Earth-Boring Machines, of which the following is aspecification.

My invention relates to an apparatus which is designed for the rapidboring of holes in the ground for the purpose of receiving posts andpoles of all kinds which are to be set upright therein, and for otherand like purposes.

It consists in the combination of reversible, turnable mechanism, in theconstruction and operation of cutting bits, mechanism for clearing theearth from around the top of the hole, and in details of constructionwhich will be more fully explained by reference to the accompanyingdrawings, in

Figure 1 is a front elevation of my earth bonng'machine.

Fig. 2 is a side elevation of same. Fig. 3 is a view of the boring-tool.Fig. 4 is another view of the boring tool, showing revoluble scra er inplace. Fig. 5 is a cross section of the ower part ofthe boring tool,showing the position of the bits.

' t is the object of my invention to provide a portable apparatus soconstructed that holes may be bored vertically in the earth, either uponlevel or hillside, and with sufficiently powerful bits to cut earth ofany degree of hardness, such as is frequently met in climates havinglong dry seasons; means by which the holes bored, and rapidly cleared ofthe excavated earth.

I have here shown my a paratus mounted upon a main frame A w 'ch may besupor desired means for transportation. Bymeans of a circular gear 2, apinion 3 engaging said gear mounted upon the shaft 4, extending to aconvenient point with relation to the working apparatus, pow r maybeapplied to said shaft by a crank or otherwise to turn the workingportion of the apparatus so that it may be brought into position to boreholes at any desired point with relation to the setting of the machine.

.Near one end of; the apparatus is a vertically disposed frame 5turnably connected with the mainframe A, and by means of adaptedtoreceive suitable pins or otherdevices for may be accurately spaced,

the purpose. This frame may be turned to stand at any desired angle withrelation to the main frame. Thus, if the contour of the land is suchthat the main frame stands at 'an inclination upon the surface, theframe 5 may be turned with relation thereto so as to bore averticalhole.

The turning of the vertical frame may be about the horizontal shafts7--7 throu which power is transmitted to operate t e boring and othermechanism. The bearings of the turnable frame are in the fonn'of collars7 upon the outside of the boxes 7 of k the shafts 7-7 and the shafts'arethus'relieved of weight and friction. A vertically guided and movablerack bar 8 has its lower by means of the pinion 12 engaging with therack bar, the boring-shaft and connected mechanism may be raised orvdepressed. Power to operate the boring shaft is derived through a ulley13 engagin therewith and through W 'ch the power-s aft is slidable uponafeather.

7 is a second shaft journaled in line with the shaft 7 and carrying ainion 22 which also en ages a pinion 23 of t e boring-shaft. It will. eseen that power thus applied'will rotate the pinion 21 in one direction,and the pinion 22 in the opposite direction.

19 and 20 are clutches carried respectively upon the shafts 7-7.

14 and 17 are sprocket-pinions, each connected 'with one member of itsclutch, so that when the clutches are disengaged the sprockets remainstationary.

If the clutch 19is engaged, and the sprocket 14 thus caused to revolvein unison with the revolution of the shaft ower will be transmittedthrough a chain om the sprocket 14 to its companion sprocket 15 on theshaft 16,

and will thus revolve the shaft 16, and

through the inion 12-will move the rack bar 8 downward y, thus feedingthe bozin tool downward. When the hole has been ored sufliciently deep,and it is desired to reverse the movement and raise the boringtool outof the ground, the clutch 19 is disen aged.

he clutch 20 is thrown into e agement so that the sprocket 17 will berevo ved the shaft 7 As the shaft 7 a is revolving in the oppositedirection from the shaft 7 by reason of its connection through .thebevelgears 21, 22, 23 it will be manifest that power transmitted fromthe sprocket 17, the sprocket 18, throu h an intermediate chain, willact to reverse t e revolution of the shaft 16 and pinion 12, and thuslift the boringtool from the ground; this tool being constantly revolvinin one direction.

The shaft 1 1 t rough which power is transmitted to the borer issuitably coupled to a shaft 11 around which is formed a spiral 25, theexterior diameter of which is substantially that of the hole to bebored. At the lower end of this shaft 1 1 isfitted a suitable bit 26which is herein shown as being in the form of a solid steel head havinga suitable shank and means for connecting it with the shaft 11. Intransverse section, this steel head is made rectangular or diamondshape, and it terminates in a cutting bit so that when the shaftisrevolved and weight applied to it, this point will enter the'ground, andits angles will cut away the ground sufliciently to ring the actualboring tool into operation. This boring or excavatin tool is composed ofcutting bits 27 made 0 the finest possible steel for the purpose. I havehere'shown three of these bits mounted upon radial arms or sup orts 28formed with the lower part of the s aft 11*. of these arms has divergentgrooves or channels within which the shanks/of two of the As the twobits 2727 firmly secure in place.

bts liie.

29 are channeled pieces having the channels adapted to fit the uper'part of the bit shank, and b means of olts 30 they are These bits maybe thus adjusted to extend to a greater or less distance outside oftheir channel supports, and the outer angle of the cutting edge of theouter bit is so placed as to cut away the earth sufiiciently to preventits coming in contact with and wearin the bit support. avetheir cuttingedges separated to a considerable extent, the third bit 27' is solocated with relation to the first that it will cut away and pulverizetheof material which might otherwise remam between the outer and innercutters, and the earth thus loosened will be removed, or artially so, bythe action of the spiral bla e 25. When the hole has been bored to asuflicient depth, the boring apparatusmay be withdrawn by the reversalof the move-- been excavate from falling back into the i the hole.

hole, when the bit is removed, I have shown a revoluble scraperconsisting of wings 31 32, and so disposed as to be revoluble about themouth of These win 31 may be made angular, or of a prope er shape andtheir acv tion will be to throw the dirt outward from The outer end ofone.

the mouth of the hole, as it is brou ht -up by the spiral and revent itsfalling ack into the holewhen t e latter has been finished.

Having thus described my invention, what I claim and desire to secure byLetters Patent is- 1. An earth borin machine havingin com-- bination ahorizonta y disposed mam frame, and a turn-table upon which it ismounted, anlupwardly extending guide frame at one end of the main frame,horizontal shafts arranged in line across one end' ofthe main frame,said guide frame having its lower portion turnably mounted upon an'axiswhich is coincident with the axis of the shaftswhereby the guide framemay be adjusted to stand at any desired angle with relation to .the mainframe, means for holding the guide frame in its adjusted position, aboring device. guided and movable upon said guide frame, said boringdevice and the adjacent ends of the horizontally alined shafts havinengageable gears, and mechanism operated from said shafts by 2. In anapparatus of the character de' scribed, the combination of a main frame,a

turn-table therefor, a vertically extendin guide frame,horizontally-disposed aline shafts extending across the main frame, saidguide frame having its lower ends turnably mounted on an axis which iscoincident with the axis of the shafts whereby it may be turned to standat any desired angle with relation to the 'main frame, means for holdinthe guide frame in its adjusted osition, sai main frame having boxes forthe horizontal shafts and said boxes havin collars on the outside forminbearings for said guide frame, a drill s aft mounted in the guide frame,operatin connections between the alined shafts an the drill shaft, andmechanism by which the drill shaft'is advanced and retracted.

3. In an apparatus of the character described, a mairi and asupplemental frame turnably'adjustable with relation to each other, saidmain frame having horizontally disposed alined shafts near one end andsaid supplemental frame having its lower portion turnably mounted on anaxis which 1s coincident with that of the shafts, means for varying thean le of one frame relative to the other, means or holding thesupplemental frame in its adjusted position, a boring device guided andmovable upon the second frame, a rack bar loosely connected with thehead of the boring bar, a inion engaging the rack, and mechanism wereby-sai pinion maybe revolved 1n opposite directions to raise ordepress the borer;

4. In an apparatus of the character de- I scribed,'a frame,-horizontally alined shafts thereon near one end, a vertical frame turnably mounted on an axis which is coincident said shaft may berevolved'while being raised or depressed.

with that of the shaft whereby the angle of the vertical frame may bevaried relative to the firstframe, means for fixing the vertical framein its adjusted position, a rack bar guided and 'movable upon saidvertical rame, a shaft mounted in the upper portion of the verticalframe and having a pinion engaging the rack bar, mechanism whereby saidshaft may be turnable in,o posite directions to raise or lower the rackar, a boring device having an u Wardly extending shaft with a head or coar thereon, clam s or yokes upon a rack bar adapted to loose y inclosesaid head, and mechanism by which 5. In an apparatus of the characterdescribed, a main frame, horizontally disposed alined shafts thereon, ,avertically disposed frame having its lower portion turnably mounted onan axis which 1s coincident with that of the shafts, a verticallydisposed boring tool, a head or collar fixed upon the shaft thereof, avertically movable rack bar carried by the vertical frame having yokesor clasps within which the collar and shaft are turnable, saidhorizontal shafts having bevelgears upon their adjacent ends, abevel-gear on the boring tool shaft engaging both of said gears andthrou h which the boring shaft is slidable where y motion is simulta-,neously transmitted to drive the boring device, and to reverse thesecond shaft.

6. In an apparatus of the character described, a vertically uided boringdevice andloosely guided rack ar, horizontal shafts in line, bevel-gearsupon their inner ends and upon the boring bar whereby motion istransmitted to drive the boring device and the second shaft, clutchesupon each of the shafts, a sprocket-wheel carried by one niember of eachclutch, a journaled shaft having a inion engaging the rack bar, andsprocketwheels registerin in line with those of the previously descri edshafts, and connecting chains whereby the engagement of one clutcharound the lower end of the revoluble shaft,

mechanism whereby the shaft is rotated and simultaneously advanced orretracted, and means surrounding the boring tool and opcrating upon thesurface of the ground around the hole for displacing the removed earth.

8. In an apparatus of the character described, a bonn toolincludingcutting bits, a shaft upon which said bits are carried, and a spirallydisposed web around the shaft a bearing and guiding frame, mechanism bywhich the boring apparatus is revolved,

mechanism by which it may be raised or de pressed while being revolved,and, a device surrounding the boring tool and revoluble upon the surfaceand around the hole which is being made whereby the excavated earth isconstantly thrown away from the opening.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

CHARLES L. BELTZ.

- Witnesses:

GEO. H. STRONG, CHARLES A. RENFIELD.

